CE,Rohs&CA65, Manufactured in a Certified ISO 9001 Facility
Frequently Asked Questions
What do I need to complete my off-grid solar power system ?
A solar panel has to be connected a charge controller to regulate current, and a battery to store the electrical power. You will need adapter kit cables to wire the solar panel(s) and charge controller, and tray cables connecting the charge controller to a deep-cycle battery.
What does off-grid and on-grid mean ?
On-grid simply means solar power equipment (array or solar panel) is connected to the electrical grid, while off-grid refers to systems that are not connected to the grid and therefore store the generated power for later use. Off-grid systems are not affected by grid blackouts.
Why is my solar panel under producing ?
Solar panel performance may be hindered for a number of reasons. Most commonly environmental conditions such as indirect sunlight, temperature rise, cloudy sky, and dirt and stain build up on the top glass will cause a reduced power output.
How should I connect solar panels in my electrical circuit (series vs parallel)
Solar panels can be connected in series or in parallel to meet your electrical circuit size and power demand. Connecting solar panels in series will have the effect of adding up their operating voltage output, while system current output will be the same as that for one panel. While, connecting solar panels in parallel will have a different effect; individual panels operating current output will add up to be the system output current, while system output voltage will be the same as the output voltage of one solar panel. To meet the optimum power output and system rating for your power system, you can use both parallel and series connections.
How many solar panels do I need ?
The best way to gauge how many solar panels you need, is to understand and define the power load needed from this system. Power is measured in Watts, and capacity is commonly measured in Watt-hours (multiplying power output in watts by the required number of hours of operation multiplied by a safety factor of 1.5-2). Therefore, it is wise to size your battery bank first based on the minimum required capacity, and accordingly decide how many panels or how much power input is needed.
What does the 12V/24V in the product title of the solar panel mean? Why is it different from the value on the label/specification sheet of the solar panel?
The 12V/24V in product titles (ex. 150W 12V CIGS Solar panel) does not refer to the actual voltage (Voc or Vmp) of the solar panels, but rather to the voltage of the solar system or energy storage system to which the panel is best suited. The voltage of the solar panel must be higher than the solar system voltage.
Posted by 1435695 renogy customer on Jun 22nd 2025
Ok, real person review here. On Vancouver Island in my Class C Coachman Freelander. At Rathtrevor Prov Park.. no power. Second time using panels and they run like a champ! 180W now on cloudy day. Two Trojan 6 volts 2000w inverter and lots of power and i’m running my Kurieg coffee maker. Very impressed with overall build and glad i sent the 200w back and went to 300W. Much better made and solid. No usb c charger but that’s ok. I did 8 gauge cables i made myself to keep the voltage up. Crimpers hard to find but found one on Amazon. Bag is good quality and easy to store. Would be nice if an Air Tag could be incorporated into design . Not sure if these go for a walk or what the story is. Overall highly recommended. My first customer service guy when i had my 200W was a total dud and was almost purposefully pissing me off with stupid questions. The other ones after him were excellent. Overall i would definitely buy again. The ability to future daisy chain is a plus with a 55 amp Renogy moot controller..
5
300 watt suitcase solar panel
Posted by LARRY GRANT on Jun 11th 2025
Great panel, better design than the 400 and the 220 watt panels